URL:
<http://savannah.gnu.org/bugs/?45265>
Summary: gsl_sf_bessel_J0_e underestimates error for x>4
Project: GNU Scientific Library
Submitted by: l0110111
Submitted on: Sat 06 Jun 2015 03:19:27 PM GMT
Category: Accuracy problem
Severity: 3 - Normal
Operating System:
Status: None
Assigned to: None
Open/Closed: Open
Release: 1.16
Discussion Lock: Any
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Details:
When gsl_sf_bessel_J0_e is supplied x>4, the errors are underestimated in
result.err. This becomes especially serious when x>8 and even worse for
17<x<30, where the true_error can be more than 4 times larger than result.err.
I suppose for x>30 it's not better.
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